Rank	Countries/Territories	Count	Percent
1	United States	302	31.7%
2	China	246	25.8%
3	Germany	63	6.6%
4	Russia	55	5.8%
5	Netherlands	37	3.9%
6	Argentina	30	3.1%
7	Japan	29	3%
8	Nigeria	19	2%
9	United Kingdom	19	2%
10	Egypt	15	1.6%
11	Canada	11	1.2%
12	Taiwan	11	1.2%
13	Mexico	10	1%
14	Korea, Republic of	9	0.9%
15	France	9	0.9%
16	Australia	8	0.8%
17	Barbados	8	0.8%
18	Colombia	8	0.8%
19	South Africa	8	0.8%
20	Switzerland	7	0.7%
21	Singapore	6	0.6%
22	Ireland	5	0.5%
23	Greece	5	0.5%
24	Romania	4	0.4%
25	Portugal	4	0.4%
26	Lithuania	3	0.3%
27	India	3	0.3%
28	Hong Kong	2	0.2%
29	Costa Rica	2	0.2%
30	Cyprus	2	0.2%
31	Mauritius	2	0.2%
32	Mongolia	2	0.2%
33	Nicaragua	2	0.2%
34	Qatar	2	0.2%
35	Ukraine	2	0.2%
36	Philippines	1	0.1%
37	Bulgaria	1	0.1%
38	Kenya	1	0.1%